BACKGROUND OF THE INVENTIONFire and smoke alarm detectors are normally installed by climbing a ladder and make the necessary wire connections to existing wires that are contained in an electrical box mounted in the ceiling. There is normally a base element which is mounted on the ceiling in front of the electrical box. Once the necessary wire connections are made, the detecting unit is mounted over the base element by way of screws.
BRIEF DESCRIPTION OF THE INVENTIONThe inventive concept makes it much easier to install the fire and smoke detector. First of all the basic unit is mounted against the ceiling. The basic unit has a female metal dove and tail connector thereon and the corresponding wires are connected to this type of connection. The fire and smoke detector unit has the opposite metal male dove and tail connections thereon. When the two connecting dove and tail connections are made, the detector is properly wired for its operation, that is, to signal any fire and smoke environment in its vicinity. The fire and smoke detector unit further has been modified to be installed remotely without the use of a ladder. This unit has on its surface at least three apertures which are accessible by way of a three prong installing device. The at least three prongs are mounted at the end of a long hand held pole which is held by a person on the floor of room were the detector is installed. It s merely up to the person to engage the at least three apertures in the bottom unit, turn it to disengage the dove and tail connectors, and then remove the bottom unit for service. To install the bottom unit is exactly the reverse of the demonstrated removal.
BRIEF DESCRIPTION OF THE DRAWINGSFIG. 1 is a perspective view of the basic unit which is to be mounted onto the ceiling over the electrical box (not shown);
FIG. 2 illustrates the lower unit to be mounted on the basic unit;
FIG. 3 illustrates a bottom view of the lower unit;
FIG. 4 shows how the lower unit is mounted onto the upper unit by way of a remote pole system;
FIG. 5 shows the top of the mounting pole ofFIG. 4 having a cap thereon with outwardly extending mounting prongs;
FIG. 6 illustrates the means for connecting the base unit and the lower together prior to completion;
FIG. 7 shows both units in a connected state.
DETAILED DESCRIPTION OF THE INVENTIONFIG. 1 shows the basic unitl in a perspective view which is to be mounted over an electrical box in the ceiling. This is a common practice. Thewires5a,5b,and5ccoming out of the electrical box (not shown) are connected to their respectivefemale connectors3,4, and5. The basic unit has acenter opening2. Thewires5a,5b,and5care usually colored as white, red and black for easy identification.
FIG. 2 illustrates thelower unit7 which is to be mounted over the basic unit by way of themale connectors8,9 and10. The detailed connection is shown inFIGS. 7 and 8. Themale connectors8,9, and10 are metal connectors and so are thefemale connectors3,4, and5 in the base unit. Once they are connected they convey the electricity into the lower base which contains the elements which will sense either smoke or heat to activate an alarm. This feature is well known and, therefore, not shown.
FIG. 3 is a view of the bottom of the lower unit including the screen which allows the heat and smoke to pass there through into the lower unit. At the periphery of the basic unit there are shown threedepressions12,13, and14 which are instrumental in mounting the lower unit to the base unit as will be explained below in greater detail.
FIG. 4 shows the manner by which the lower unit is mounted remotely to the base unit. There is shown a man M manipulating a long pole P having acap18 at its upper end and showing a simulatedlower unit7 thereon.
FIG. 5 shows the details of theupper cap18 mounted to the upper end of the pole P. The cap has at least threeprongs15,16, and17 extending outwardly there from which will engage thedepressions12,13, and14 shown inFIG. 3 so that it can be extended upwardly by the pole P. When placed on the base unit, a twist of the pole P will engage the respective connectors to finish the installation.
FIG. 6 shows thebase unit1 and thelower unit7 just prior to their engagement. The base unit has three metal clad female connectors3 (only one is shown in thisFIG. 6, while all three are shown inFIGS. 1 as2,4, and5). As mentioned above, the female connectors are connected to the incoming wires from the electrical box. Also shown inFIG. 6 are the metalclad male connectors8. Again,FIG. 2 shows all threemale connectors8,9, and10.
FIG. 7 shows the final connections between thebase unit1 and thelower unit7 with the female and male connectors in full engagement. As mentioned above, the final connection is achieved when the pole P with the lower unit at its top is twisted to complete the installation.